A lamp at a distance of 3 m above the point P on the floor of the room in P produces a glow of 100 lm/ m ^ 2. A) Calculate the luminous intensity of this lamp. B) Get a glow at another point on the floor at a distance of 1 m from P.
A lamp at a distance of 3 m above the point P on the floor of the room in P produces a glow of 100 lm/ m ^ 2. A) Calculate the luminous intensity of this lamp. B) Get a glow at another point on the floor at a distance of 1 m from P.
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A lamp at a distance of 3 m above the point P on the floor of the room in P produces a glow of 100 lm/ m ^ 2.
A) Calculate the luminous intensity of this lamp.
B) Get a glow at another point on the floor at a distance of 1 m from P.
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